"Intel is planning its own UI overlay, codenamed 'Obsidian', that it will bring to the mobile operating system Tizen and possibly Android. A source working at Intel has tipped Ars with several early screenshots and some video of Intel's Obsidian project, which includes a handful of unique UI touches."

1.) It's really unlikely you will ever see this UI on an actual phone held in your hand. Carriers and manufacturers are known to add their own UI (or just some UI touches) before offering a phone to end users. Phones with a non-ARM CPU will prob'ly get the same treatment and testers and developers will have a default UI to use if they are going to use a 'raw' Tizen handset.

2.) Learning new stuff is good for your brain. So don't learn it if you don't want to. Intel's UI is not the only phone interface out there. It's not out there yet either.

You may even have to pay someone for a phone that actually uses it in order to learn it. Double Bonus! You could avoid the UI and conserve cash by not buying one.